Improvement in pipe-wrenches



6. P. MDLUNEY.

Pipe Wrenches,A N0. 139,177. PatentedMay 20,1873.

R11 xzs 1 uwmixwv.

UNITED STATES PATENT QEEIGE.:

GEORGE P. MOLONEY, OF DETROIT, MICHIGAN.

IMPROVEMENT IN PIPE-WRENCHES.

Specific-ation forming part of Letters Patent No. 139,177, dated May 20,E873; application iled` March 8, 1673.

To all whom it may concern:

Be it known that I, GEORGE P. MoLoNEY, of Detroit, in the county ofW'ayne and State of Michigan, have invented a new and useful Improvementin Pipe-Tongs; and I do declare that the following is a true andaccurate description thereof', reference being had to the accompanyingdrawing and to the letters of reference marked thereon and being a partof this specification, in which- Figure l is a perspective view ot' myim proved tongs. Fig. 2 is a plan of the saine, the fulcrum-bolt beingremoved. Fig. 3 is a perspective view of the fulcrum-bolt.

' Like letters refer to like parts in the several figures.

The nature ot' this invention relates to an Aimprovement in pipe tongsof that class which are designed tu grasp cylindrical objects of'various diameters, and has for its object to so construct the tongs asto make it more readily adjustable than those now in use; and itconsists in the peculiar construction of the device, as more fullyhereinafter set forth.

In the drawing, A A represent the levers of the tongs, the former ofwhich has a hook7 a, turned at the extremity of its shorter arm, Whilethe short arm ofthe lever A terminates in a bit, a', as in the ordinarytongs. 'lhe oli'- set ofthe lever A is longitudinally slotted, as at b,and in the outer face of the slotted part three or more transverserecesses, c, are formed. The other lever has an eye for the fulcrumboltB, which passes through it; but around the bolt a bushing or sleeve, d,sits in the eye. The length of this sleeve is alittle greater than thethickness of the lever `A at the eye, so that when the nut B is screwedhome on the bolt it will impinge on the sleeve and not on the lever tobind it and impede its action. The

shank ot' thebolt where it passes through the slot is square. to preventit from turning therein; and under the head is formed a rib, e, at oneside of the center ot the bolt, which rib rests in one of the recessesc. To adjust the tongs, slacken the nut sufficiently to allow the rib tofree itself' from the recess; then move the hook ofthe lever Aoutwardly, away from` the bit ofthe lever A. It it be desired to ell- .i

gage with a pipe ot' large diameter, or, vice versa, 1t' to grasp asmaller one, drop the rib into the proper recess and tighten up the nut,

when the tongs are ready for use. The re- .Vitnesses:

H. F. EBERTs, THEO. S. DAY.

